You have to look for it in the Limited Distribution section at the bottom of the Vortex home page. That one is a Midway exclusive. I've debated it, but I think that it's a crap reticle. For just a little more money, you've into the Nightforce SHV 3-10, a better scope.
I had a 3-15 when they came out. Glass was green/cold to me. Turrets were mushy. Just seemed meh so I returned it. I think it was Ilya's pick for a minute so I think I followed him in.